/**
 * Copyright (c) 2010 Simple Graph Tools contributors. All rights reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * $Id$
 */
package org.sgt.testdef.validation.constraints;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.emf.common.util.EMap;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.validation.AbstractModelConstraint;
import org.eclipse.emf.validation.EMFEventType;
import org.eclipse.emf.validation.IValidationContext;
import org.sgt.testdef.TestCase;
import org.sgt.testdef.TestSuite;



/**
 * @author Anne BUTTIGHOFFER
 *
 */
public class EmptyTestSuite extends AbstractModelConstraint {

	/* (non-Javadoc)
	 * @see org.eclipse.emf.validation.AbstractModelConstraint#validate(org.eclipse.emf.validation.IValidationContext)
	 */
	@Override
	public IStatus validate(IValidationContext ctx) {
		EObject eObj = ctx.getTarget();
		EMFEventType eType = ctx.getEventType();
		
		// In the case of batch mode.
		if (eType == EMFEventType.NULL) {
			boolean empty = false;
			if (eObj instanceof TestSuite) {
				TestSuite suite = (TestSuite)eObj;
				EMap<Integer, TestCase> map = suite.getCases();
				if (map == null || map.isEmpty()){
					empty = true;
				}
					
			}
			
			if (empty) {
				return ctx.createFailureStatus(new Object[] {
						eObj.eClass().getName()
						,((TestSuite)eObj).getName()
						,((TestSuite)eObj).getID()
						});
			}
		}
		
		return ctx.createSuccessStatus();
	}

}
